Sony Bravia KDL42w705B 4K 8 red blinks

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  • badcaphunter
    Senior Member
    • Jan 2016
    • 88
    • England
    #1

    Sony Bravia KDL42w705B 4K 8 red blinks

    My mate sold me this tv and i cant figure out what board is causing this error code.

    The TV comes with a Power Adapter similar to a laptop, when i first plug the TV in the power brick makes some high pitched noises, its not really loud but its noticeable, The TV wont display any error codes or standby light for 4-5 mins and as soon as it starts giving the 8 blinks the power brick stops making any noises. I have tried power cycling and resting it with the remote and power button but still no joy, When the TV first gets power i can see a red light coming from the optical out but when it starts giving the blinks the audio optical light goes out.

    The main cpu/graphics chip gets warm to the touch until it goes into protect mode, i have checked all the SMD fuses on the inverter/power board and they all seem fine.

    When i was power cycling my lip touched the corner of the aluminium bezel and i got a little zap.

    I am thinking of ordering another main board but i'm not sure this is causing the problem.

    Any help would be appreciated.

    Main Board 173457422 1-889-202-22
    Tuner/Scart Board 173457522 1-889-203-22
    Inverter/Power Board TS-5542T34D02-49A
    Tags: None
    • ReeceyBurger123
      Never Give Up !
      • May 2014
      • 7325
      • Britain
      #2
      Re: Sony Bravia KDL42w705B 4K 8 red blinks

      I have the same model here, the orginal Tcon is blown to peices. The panel is shorted. Im able to get the backlight on very breifly with the Lcd disconnected but the Tcon still in. Not going to be fixable.
      Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

      https://www.facebook.com/Telford-Tel...7894576335359/

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